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Term 1: Term 2:

(subclass Magnet Object) Cars.kif 3866-3866 Magnet 是 客体 的 subclass
(subclass NaturalMagnet Magnet) Cars.kif 3880-3880 NaturalMagnet 是 Magnet 的 subclass
(subclass Electromagnet Magnet) Cars.kif 3886-3886 Electromagnet 是 Magnet 的 subclass


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